Fabric for clothes and method for manufacturing fabric for clothes

Abstract

Provided are: a fabric for clothing, which is made of a non-woven fabric and has both thinness and strength; and a method for manufacturing the fabric for clothing. The garment fabric (S) has a multilayer structure comprising: a first layer (L1) having air permeability; and a second layer (L2) configured so that a treatment agent is mixed into the defibrated fibers.

Description

Technical Field

[0001] The invention relates to a fabric for clothing and a method for manufacturing the fabric for clothing. Background Art

[0002] Conventionally, a nonwoven fabric is known. For example, Patent Document 1 discloses a mask made of a nonwoven fabric.

[0003] However, the nonwoven fabric described in Patent Document 1 has the following problem: when the nonwoven fabric is used in clothing, it is difficult to achieve both thinness and strength. Specifically, if the nonwoven fabric is processed into clothing and worn, it is likely to be damaged due to insufficient strength. In addition, if the fabric is thickened to improve strength, the softness of the fabric will decrease, which may sometimes impair the touch and skin feel. That is, a nonwoven fabric for clothing that has both thinness and strength is required.

[0004] Patent Document 1: Japanese Patent Application Publication No. 2022-157261 Summary of the invention

[0005] The clothing fabric has a multi-layer structure, which includes: a first layer having air permeability; and a second layer formed in such a way that a treatment agent is mixed into defibrated fibers.

[0006] The method for manufacturing fabrics for clothing comprises: a defibration step of defibration of fabrics in a dry manner to generate fibers; a mixing step of mixing a treatment agent into the fibers to generate a mixture; a deposition step of depositing the mixture on a breathable fabric that becomes a first layer in the air to generate a sheet that becomes a second layer; and a forming step of pressurizing and heating the fabric and the sheet for forming. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 It is a schematic cross-sectional view showing the structure of the fabric for clothing according to the embodiment.

[0008] Figure 2 The present invention is a flow chart showing a method for manufacturing fabrics for clothing.

[0009] Figure 3 The present invention is a schematic diagram showing the structure of a fabric manufacturing device used in the manufacture of fabrics for clothing.

[0010] Figure 4 This is a table showing the production conditions and evaluation results of clothing fabrics according to Examples and Comparative Examples. DETAILED DESCRIPTION

[0011] In the embodiments described below, fabrics for clothing manufactured in a dry process and methods for manufacturing the same are exemplified and described with reference to the accompanying drawings. In this specification, dry process refers to a process that is not carried out in a liquid such as water but in air such as the atmosphere. In addition, the fabrics for clothing of the present invention are not limited to being manufactured in a dry process.

[0012] In the following drawings, XYZ axes are marked as mutually orthogonal coordinate axes as needed, and the direction indicated by each arrow mark is set as the + direction, and the direction opposite to the + direction is set as the - direction. The Z axis is an imaginary axis along the vertical direction, and the +Z direction is set as the upper direction and the -Z direction is set as the lower direction.

[0013] In the fabric manufacturing device 1, the target side of the conveying direction of the raw material, material piece, and clothing fabric is sometimes referred to as downstream, and the side of the retracing conveying direction is referred to as upstream. For the convenience of illustration, the size of each component is different from the actual situation.

[0014] 1. Fabrics for clothes

[0015] like Figure 1 As shown, the clothing fabric S involved in this embodiment has a multilayer structure including a first layer L1 and a second layer L2. The first layer L1 includes a base layer L1b and an adhesive layer L1a. In the clothing fabric S, the base layer L1b of the first layer L1, the adhesive layer L1a of the first layer L1, and the second layer L2 are stacked in this order from the bottom to the top. When the clothing fabric S is processed into clothing, one of the first layer L1 and the second layer L2 can also be used on the surface side of the clothing.

[0016] The thickness of the clothing fabric S is appropriately set according to the purpose and form of the clothing to be applied. The thickness of the clothing fabric S is not particularly limited, but is set to be, for example, 0.30 mm or more and 1.50 mm or less. Thus, the softness and strength of the clothing fabric S can be improved.

[0017] The first layer L1 is breathable. If the second layer L2 is also breathable, the first layer L1 does not hinder ventilation, so the clothing fabric S is given breathability. Thus, when the clothing fabric S is used as clothing, stuffiness can be suppressed when worn.

[0018] Furthermore, in the manufacture of the clothing fabric S, the air permeability of the first layer L1 can be used to promote the formation of the fibers, etc., which become the second layer L2, on the first layer L1. Specifically, by sucking the air in which the fibers, etc. are dispersed through the first layer L1, the formation of the fiber-containing sheet is promoted. In addition, the manufacturing method and manufacturing process of the clothing fabric S will be described in the item of the clothing fabric manufacturing method in the later part.

[0019] In this specification, air permeability is defined by the amount of air passing through a test piece in accordance with the JIS air permeability test (L1096 2010 8.26.1A method). In this specification, air permeability means that the amount of air measured by the above test method is 10 cm 3 / cm 2 ·More than seconds.

[0020] The thickness of the first layer L1 is not particularly limited, but is preferably set to, for example, 0.01 mm or more and 0.20 mm or less. Thus, the softness and strength of the fabric S for clothing can be improved.

[0021] The base layer L1b has air permeability and is one surface of the fabric S for clothing. The second layer L2 is the other surface of the fabric S for clothing.

[0022] The base material layer L1b is a sheet of woven fabric, knitted fabric, nonwoven fabric, etc. containing polyester. Since polyester is excellent in strength, the thinness and strength of the fabric S for clothing can be further improved.

[0023] The base material layer L1b is not limited to being composed of polyester, and may be a sheet composed of polyester and other resins, or a sheet composed of a resin other than polyester.

[0024] The adhesive layer L1a is interposed between the base layer L1b and the second layer L2. Since the first layer L1 and the second layer L2 are strongly adhered together by the adhesive layer L1a, the peeling strength between the first layer L1 and the second layer L2 can be improved.

[0025] As the material of the adhesive layer L1a, there can be listed well-known adhesive materials such as polyester resin, acrylic resin, silicone resin, and polyurethane resin, and well-known adhesives such as epoxy, acrylic, cyanoacrylate, polyurethane, and vinyl acetate. In the case of using an adhesive as the adhesive layer L1a, the adhesive layer L1a may be a structure that is cured by heat applied during the molding process in the manufacturing process of the clothing fabric S.

[0026] The adhesive layer L1a also has air permeability. Specifically, the adhesive layer L1a is formed in a manner that does not hinder the air permeability of the first layer L1. As such an adhesive layer L1a, there can be cited a layer in which the above-mentioned adhesive material and adhesive are applied in a planar manner into a mesh shape, a layer having a plurality of holes penetrating in the direction along the Z axis, and the like.

[0027] The adhesive layer L1a is not an essential structure, and the first layer L1 may be composed of only the base layer L1b. In this case, the first layer L1 and the second layer L2 are bonded together by pressurization and heating in the molding process during the manufacturing process of the clothing fabric S.

[0028] The first layer L1 may also be colored. When the base material layer L1b and the adhesive layer L1a are formed of the above-mentioned materials, they will generally be white in color. Therefore, if the second layer L2 is colored, the color tones of the first layer L1 and the second layer L2 will be greatly different. When the clothing fabric S is processed into clothing, the difference in color tones between the first layer L1 and the second layer L2 is likely to be more noticeable. In contrast, if the first layer L1 is colored in a color tones close to that of the second layer L2, the difference in color tones can be made less noticeable when processed into clothing. In addition, when the first layer L1 is used in a manner that makes it the surface side of clothing, the design can be improved by coloring it in various colors.

[0029] The coloring of the first layer L1 only needs to be performed on the above-mentioned one surface of the clothing fabric S. Although not particularly limited, the coloring of the first layer L1 can be performed by a known method such as digital printing such as inkjet printing or analog printing. The coloring of the first layer L1 can be performed at the manufacturing stage of the first layer L1 or in the manufacturing process of the clothing fabric S.

[0030] The second layer L2 is a nonwoven fabric in which a treatment agent such as a binder is mixed into defibrated fibers. In the following description, defibrated fibers may be simply referred to as fibers.

[0031] Preferably, the weight of the second layer L2 is 100 g / m 2 Above and 180g / m 2 The following is the weight. The weight refers to the number of grams per square meter of the surface along the XY plane in a piece of clothing fabric S. By making the weight of the second layer L2 within the above range, the balance between thinness and strength can be ensured in the second layer L2. Therefore, the thinness and strength of the clothing fabric S can be further improved.

[0032] The basis weight of the second layer L2 is adjusted by the amount of material sheets to be formed, that is, the thickness of the material sheets, etc., during the stacking process when the clothing fabric S is manufactured.

[0033] The thickness of the second layer L2 is not particularly limited, but is preferably set to 0.20 mm or more and 0.80 mm or less, for example. Thus, the softness and strength of the clothing fabric S can be improved. In addition to adjusting the thickness of the material sheet as described above, the thickness of the second layer L2 is also adjusted by the pressurization conditions of the material sheet during the forming process when manufacturing the clothing fabric S.

[0034] In addition, if the thickness of the second layer L2 is less than the lower limit of the above range, unevenness is likely to occur due to thickness deviation. Therefore, when the second layer L2 is used on the front side of the clothing, the first layer L1 on the back side may be seen through. Therefore, it is preferable to suppress the deviation of the thickness of the second layer L2. However, the second layer L2 may have a portion with uneven thickness.

[0035] In the second layer L2, the first surface F1 in contact with the first layer L1 or the second surface F2 on the opposite side to the first surface F1 may be subjected to surface treatment. The surface treatment can improve various physical properties such as abrasion resistance.

[0036] The surface treatment is not particularly limited, but includes softening treatment, water-repellent treatment, wrinkle-proof treatment, wear-resistant treatment, etc. In these surface treatments, known fiber treatment agents, etc. can be applied. For example, if the wear-resistant treatment is performed, the fuzzing of the surface caused by the friction of the clothes can be suppressed, thereby maintaining the appearance of the clothes well.

[0037] The surface treatment may be applied during the manufacturing process of the clothing fabric S or after the clothing fabric S is manufactured. In particular, when the surface treatment is applied to the first surface F1, the second layer L2 and the first layer L1 are manufactured separately. Furthermore, after the surface treatment is applied to the first surface F1 of the second layer L2, the first layer L1 and the second layer L2 may be bonded together to manufacture the clothing fabric S.

[0038] The fiber is one of the main components of the second layer L2, and together with the binding material, it affects the physical properties of the cushioning material, such as the mechanical strength. Among the fibers, fibers obtained by defibration of cloth are used. From the perspective of resource recycling, it is preferred to use old cloth such as old clothes.

[0039] Examples of the fabric include knitted fabrics, plain woven fabrics, and suede fabrics. In addition, the fabric may include nonwoven fabrics.

[0040] Examples of the fiber include fiber materials derived from natural products such as cotton, linen, wool, silk, and regenerated cellulose, and synthetic fibers such as polypropylene, polyester, and polyurethane.

[0041] The fibers may be used alone or in combination of two or more. In particular, among the above-mentioned fiber materials, the cloth preferably contains cotton or wool from the viewpoint of the ease of obtaining old clothes and the physical properties of the fibers.

[0042] The weighted average fiber length of the defibrated fibers is preferably 0.5 mm or more and 2.0 mm or less. As a result, the fibers are not excessively shortened, so that the fibers are appropriately entangled with each other, thereby improving the mechanical strength of the second layer L2. The weighted average fiber length is obtained using a method based on ISO 16065-2:2007.

[0043] The binding material binds the fibers to each other in the second layer L2. In the binding material, a thermoplastic or thermosetting resin is used. As resins, in addition to synthetic resins such as polyester, natural resins such as shellac, rosin, dammar resin, polylactic acid, polybutylene succinate derived from plants, polyethylene derived from plants, PHBH (registered trademark) (Poly (3-hydroxybutyrate-co-3-hydroxyhexanoate)) of Kaneka Co., Ltd. can also be listed. In the binding material, one of them can be used alone, or two or more types can be used in combination.

[0044] As the treatment agent other than the binding material, for example, a color material for coloring the second layer L2, various additives, etc. can be listed. As the color material, a known pigment and dye can be applied. As the additive, for example, a flame retardant, an antioxidant, an ultraviolet absorber, an aggregation inhibitor, an antibacterial agent, an antifungal agent, wax, and a release agent can be listed.

[0045] 2. Manufacturing method of fabrics for clothing

[0046] like Figure 2 As shown, the method for manufacturing a fabric for clothing according to the present embodiment includes a raw material supplying step S1, a defibration step S2, a mixing step S3, a stacking step S4, a forming step S5, and a cutting step S6.

[0047] In the method for manufacturing clothing fabrics, clothing fabrics S are manufactured through each process in the above order, from the upstream raw material supply process S1 to the downstream cutting process S6. In addition, the method for manufacturing clothing fabrics of the present invention includes a defibration process S2, a mixing process S3, a stacking process S4, and a forming process S5, and other processes are not limited to the above contents.

[0048] A specific example of the method for manufacturing a clothing fabric will be described together with a fabric manufacturing apparatus 1 for manufacturing a clothing fabric S. The fabric manufacturing apparatus 1 and the method for manufacturing a clothing fabric according to the present embodiment are merely examples and are not limited thereto.

[0049] like Figure 3 As shown, in the fabric manufacturing device 1, from upstream to downstream, there are provided a supply unit 5, a crushing unit 10, a defibration unit 30, a mixing unit 60, an accumulation unit 100, a sheet conveying unit 70, a forming unit 150, and a cutting unit 160. In addition, the fabric manufacturing device 1 is also provided with a control unit 28 for comprehensively controlling the operations of the above-mentioned structures. The fabric manufacturing device 1 manufactures a fabric S for clothing from a cloth C.

[0050] The raw material supplying step S1 is performed in the supply unit 5. The supply unit 5 supplies the raw material to the crushing unit 10. The supply unit 5 includes, for example, an automatic feeding mechanism (not shown), and continuously and automatically feeds the raw material cloth C to the crushing unit 10. Examples of the cloth C include fiber-containing materials such as old cloth.

[0051] The crushing unit 10 crushes the cloth C supplied from the supply unit 5 into pieces in an atmosphere such as air. The crushing unit 10 is a pulverizer or a shredder having a crushing blade 11. The cloth C is crushed by the crushing blade 11 into pieces. The planar shape of the pieces is, for example, several mm square or an irregular shape. The pieces are collected in the fixed quantity supply unit 50.

[0052] The quantitative supply unit 50 measures the chips and quantitatively supplies them to the hopper 12 . The quantitative supply unit 50 is, for example, a vibrating feeder. The chips supplied to the hopper 12 are conveyed in the tube 20 and reach the introduction port 31 of the defibrating unit 30 .

[0053] In the defibrating unit 30, the defibrating step S2 is performed. The defibrating unit 30 defibrates the fragments of the cloth C in a dry manner to generate fibers. The defibrating unit 30 includes an inlet 31, an outlet 32, a stator 33, an impeller 34, and an airflow generating mechanism (not shown). The fragments of the cloth C are introduced into the defibrating unit 30 through the inlet 31 by the airflow of the airflow generating mechanism.

[0054] The stator 33 and the impeller 34 are arranged inside the defibration unit 30. The stator 33 has a substantially cylindrical inner surface. The impeller 34 rotates along the inner surface of the stator 33. The fragments of the cloth C are sandwiched between the stator 33 and the impeller 34 and defibrated by the shear stress generated therebetween.

[0055] The fibers generated in the defibrating unit 30 are discharged from the discharge port 32 into the tube 40. The tube 40 communicates with the interior of the defibrating unit 30 and the interior of the accumulation unit 100. The fibers are transported from the defibrating unit 30 to the accumulation unit 10 by the airflow generated by the airflow generating mechanism. A mixing unit 60 is provided in the tube 40 between the defibrating unit 30 and the accumulation unit 100.

[0056] The mixing step S3 is performed in the mixing section 60. The mixing section 60 includes hoppers 13 and 14, supply pipes 61 and 62, and valves 65 and 66. The mixing section 60 mixes the treatment agent with the fibers in the air to generate a mixture.

[0057] The hopper 13 is connected to the inside of the tube 40 via the supply pipe 61. In the supply pipe 61, a valve 65 is provided between the hopper 13 and the tube 40. The hopper 13 supplies the binding material into the tube 40. The valve 65 adjusts the mass of the binding material supplied from the hopper 13 to the tube 40. Thus, the mixing ratio of the fiber and the binding material is adjusted. The binding material can be supplied in the form of powder or particles, or can be supplied in a melted form.

[0058] The hopper 14 is connected to the inside of the tube 40 via the supply pipe 62. In the supply pipe 62, a valve 66 is provided between the hopper 14 and the tube 40. The hopper 14 supplies the color material and the additive into the tube 40. The valve 66 adjusts the mass of the color material and the additive supplied from the hopper 14 to the tube 40. Thus, the mixing ratio of the color material and the additive to the fiber and the binding material is adjusted. In addition, the color material and the additive may be mixed with the binding material in advance and supplied from the hopper 13.

[0059] The fibers and the binding material are mixed and formed into a mixture while being conveyed to the accumulation part 100 in the tube 40. In order to promote the generation of the mixture in the tube 40 and improve the conveyability of the mixture, a blower or the like that generates airflow may be arranged in the tube 40. The mixture is introduced from the tube 40 to the accumulation part 100 via the connection part 42.

[0060] In the accumulation section 100, an accumulation step S4 is performed. The accumulation section 100 accumulates the mixture on the air-permeable fabric N of the first layer L1 of the clothing fabric S in the air to generate a sheet W of the second layer L2. In other words, the second layer L2 is formed by accumulating the mixture containing the defibrated fibers and the treatment agent on the fabric N of the first layer L1 in the air. Therefore, the second layer L2 can be formed simply. In addition, the gram weight can be easily changed.

[0061] The accumulation unit 100 includes a drum unit 101, a housing unit 102 that accommodates the drum unit 101, and a fabric supply unit 71 that supplies the fabric N. The accumulation unit 100 takes the mixture from the tube 40 into the drum unit 101. The mixture is accumulated on the fabric N supplied from the fabric supply unit 71 in a dry manner.

[0062] A web conveying unit 70 including a mesh belt 122 and a suction mechanism 110 is disposed below the stacking unit 100. The suction mechanism 110 is disposed to face the roller unit 101 with the mesh belt 122 interposed therebetween in the direction along the Z axis.

[0063] The drum part 101 includes a blade part 101a which is driven to rotate by a motor not shown in the figure, and a substantially cylindrical screen part 101b which is arranged in a manner mainly covering the lower part of the blade part 101a. The blade part 101a disassembles the entangled fibers while rotating. The screen part 101b allows particles such as fibers smaller than the opening size of the mesh of the screen and a mixture to pass from the inside to the outside. Thus, the mixture disassembles the entangled fibers using the drum part 101 and is dispersed into the air in the housing part 102.

[0064] The fabric supply unit 71 continuously delivers the roll-shaped fabric N onto the mesh belt 122. At this time, the adhesive layer L1a of the fabric N becomes the upper surface. In addition, when a release paper is adhered to the above-mentioned adhesive layer L1a of the fabric N, the fabric supply unit 71 may also include a separation mechanism for separating the release paper from the fabric N.

[0065] The fiber-containing mixture is dispersed from the inside of the screen 101b into the air in the housing 102. The fiber-containing mixture is randomly deposited above the web N conveyed on the mesh belt 122. Therefore, it becomes difficult for the fibers in the web W to be oriented in a specific direction.

[0066] The screen part 101b may not have the function of screening larger fibers in the mixture. That is, the drum part 101 may also disassemble the fibers of the mixture and release all the mixture into the interior of the housing part 102. The mixture dispersed in the air in the housing part 102 is deposited on the surface above the fabric N by gravity and the suction force of the suction mechanism 110.

[0067] The gram weight of the clothing fabric S is adjusted by the unit area weight of the fabric N and the material piece W. The unit area weight of the material piece W is adjusted by the rotation speed of the blade member 101a, the hourly supply amount of the mixture to the accumulation part 100, and the conveying speed of the fabric N achieved by the mesh belt 122.

[0068] The mixing ratio of the fiber and the treatment agent is not particularly limited and is appropriately adjusted according to the type of the treatment agent. For example, when a binder is used as the treatment agent, the mass ratio of the fiber to the binder in the material W is preferably set in the range of 9:1 to 5:5 in the case of the fiber to the binder. Thus, the balance of the physical properties of the fabric S for clothing can be ensured.

[0069] The web conveying unit 70 includes a mesh belt 122 and a suction mechanism 110. The web conveying unit 70 promotes the deposition of the mixture on the web N by the suction mechanism 110. Furthermore, the web conveying unit 70 conveys the web W formed of the mixture downstream by the rotation of the mesh belt 122.

[0070] The suction mechanism 110 is disposed below the drum portion 101. The suction mechanism 110 sucks the air in the housing portion 102 through the plurality of holes of the mesh belt 122 and the air-permeable fabric N. Thus, the mixture released to the outside of the drum portion 101 is sucked downward together with the air and deposited on the surface above the fabric N. In the suction mechanism 110, a known suction device such as a blower can be used.

[0071] The mesh belt 122 has a plurality of holes that allow air to pass through and that make it difficult for fibers and binders contained in the mixture to pass through. The mesh belt 122 is an endless belt and is stretched by four stretching rollers 121 .

[0072] The mesh belt 122 moves with its upper surface toward the downstream by the rotation of the suspension roller 121. Figure 3 The mesh belt 122 is rotated clockwise. The mesh belt 122 is rotated by the installation roller 121, so that the mixture is continuously accumulated and forms a sheet W. The sheet W contains a lot of air, so it is soft and expanded. The sheet W is transported downstream together with the fabric N as the mesh belt 122 moves.

[0073] A humidifier 130 may be disposed downstream of the accumulation section 100 to spray water onto the web W for humidification. This can suppress the scattering of fibers or binding materials contained in the web W. In addition, a water-soluble treatment agent may be contained in the water used for humidification, thereby performing surface treatment on the web W to become the second layer L2 in parallel with humidification.

[0074] The web W and the fabric N are conveyed downstream by the mesh belt 122, and are peeled off from the mesh belt 122 and introduced to the jumping roller 141. The jumping roller 141 is provided to ensure the processing time of the downstream forming process S5. In detail, since the forming process S5 subsequent to the stacking process S4 is a batch process, the processing time of the forming process S5 is ensured by moving the jumping roller 141 up and down for the web W and the fabric N continuously supplied from the stacking unit 100. The web W and the fabric N pass through the jumping roller 141 and reach the forming unit 150.

[0075] In the forming section 150, a forming step S5 is performed. In the forming step S5, the material sheet W is heated and pressurized together with the fabric N to form a strip-shaped clothing fabric S. The forming section 150 is a heating press device, and includes an upper substrate 152 and a lower substrate 151. The upper substrate 152 and the lower substrate 151 sandwich the material sheet W and the fabric N therebetween and pressurize them, and heat the material sheet W and the fabric N by a built-in heater. In addition, in the forming step S5, the forming step S5 may be continuously performed using a pair of heated rollers or the like.

[0076] The material W is compressed from the top and bottom by applying pressure to increase the density, and the binding material is melted by heating to wet and expand between the fibers. When the heating is completed in this state and the binding material is solidified, the fibers are bonded together by the binding material. In addition, the fabric N and the material W are adhered together, the fabric N becomes the first layer L1, and the material W becomes the second layer L2.

[0077] The conditions of pressurization and heating in the forming section 150 are appropriately adjusted according to the desired density of the clothing fabric S and the melting point or curing temperature of the bonding material. Although not particularly limited, the above-mentioned pressurization conditions are, for example, 0.01 MPa or more, and the above-mentioned heating conditions are, for example, 90° C. or more. The fabric N and the material piece W pass through the forming section 150 to form a strip-shaped clothing fabric S, and then move toward the cutting section 160.

[0078] The cutting step S6 is performed in the cutting unit 160. The cutting unit 160 adjusts the shapes of the sides of both ends of the strip-shaped clothing material S. The cutting unit 160 includes a longitudinal blade (not shown).

[0079] The longitudinal blade cuts the strip of clothing fabric S in the direction along the traveling direction. Thus, the edges of both ends of the clothing fabric S are cut flush. Moreover, the strip of clothing fabric S is rolled into a roll to become clothing. In addition, the cutting unit 160 may also have a transverse blade that cuts the clothing fabric S in a direction intersecting the traveling direction. In this case, the clothing fabric S is cut into single sheets of a roughly rectangular shape. In the above manner, the clothing fabric S is manufactured.

[0080] The method for manufacturing a fabric for clothing of the present embodiment may further include, in addition to the above-mentioned steps, a step of applying the above-mentioned surface treatment to the second layer L2 and a step of coloring the first layer L1 .

[0081] According to this embodiment, the following effects can be obtained.

[0082] The thinness and strength of the clothing fabric S can be improved. Specifically, since the second layer L2, which is a nonwoven fabric containing defibrated fibers, is reinforced by the first layer L1, the strength can be improved. Therefore, the thickness can be reduced while the strength of the clothing fabric S is ensured. Therefore, a clothing fabric S having both thinness and strength and a method for manufacturing the clothing fabric can be provided.

[0083] 3. Examples and Comparative Examples

[0084] The following is a more specific description of the effects of the present invention by showing examples and comparative examples. Figure 4 The layer structure, manufacturing conditions, and evaluation results are illustrated in the figure. In the following description, Examples 1 to 5 are sometimes collectively referred to as examples, and Comparative Examples 1 to 8 are sometimes collectively referred to as comparative examples. In addition, the present invention is not limited in any way by the following examples.

[0085] 3.1. Preparation of test pieces for evaluation of clothing fabrics

[0086] like Figure 4 As shown in the figure, in Example 1, a blended fabric composed of cotton and polyester is used as the fabric C of the fiber raw material. Specifically, as the raw material supply step S1, the knitted fabric is roughly shredded into roughly rectangular pieces with a long side of 1 mm to 30 mm using a shredder of Makino Sangyo Co., Ltd. Next, as the defibration step S2, the above-mentioned pieces are defibrated to form fibers in the same manner as the defibration step S2 of the above-mentioned embodiment.

[0087] Next, as a mixing step S3, the fibers and the binding material are mixed by air at a mass ratio of 10 to 3. Thereafter, as a stacking step S4, the mixture is stacked on the fabric N in the air to form a sheet W. At this time, the weight of the second layer L2 is 100 g / m 2 The amount of the mixture deposited was adjusted in a manner. In addition, a polyester nonwoven fabric with a thickness of 0.1 mm was used as the fabric N. A thermoplastic resin was used as the binding material.

[0088] Next, as a forming step S5, the material piece W and the fabric N were subjected to heat stamping. At this time, as a heat stamping machine, AF-54TEN (trade name) of ITSUMI Co., Ltd. was used, and the heating condition was set to 150°C for 1 minute, and as a pressurizing condition so that the thickness of the second layer L2 in the fabric S for clothing became 0.31 mm, the fabric S for clothing of Example 1 was manufactured. No surface treatment was applied to the second layer L2 of Example 1. Then, as a cutting step S6, a single sheet of 250 mm in length and 100 mm in width was cut by a cutter to become a test piece for evaluation.

[0089] In Example 2, compared with Example 1, the weight of the second layer L2 is set to 160 g / m 2 The thickness of the second layer L2 was set to 0.90 mm. A test piece was produced in the same manner as in Example 1 except that the forming step S5 was not performed and the first layer L1 and the second layer L2 were bonded together by hand.

[0090] In Example 3, in addition to the weight of the second layer L2 being set to 160 g / m 2 A test piece was produced in the same manner as in Example 1 except that the thickness of the second layer L2 was set to 0.78 mm.

[0091] In Example 4, compared with Example 1, the weight of the second layer L2 is set to 160 g / m 2 The thickness of the second layer L2 is set to 0.75 mm. In addition, the material piece W is not formed on the fabric N but is formed separately, and after the surface treatment is applied, the forming step S5 is implemented. As the surface treatment, the wear-resistant treatment achieved by the surface treatment agent A is applied.

[0092] Specifically, as the surface treatment agent A, OXAL-HX (trade name, blocked isocyanate crosslinking agent) of Epson Como Printing Technologies S.rl was used. The surface treatment agent A was prepared into an aqueous solution with a concentration of 100 g / L. Moreover, as a surface treatment, the above solution was impregnated into the material sheet W using a padding machine as an impregnation device. Thereafter, it was dried at 160°C for 3 minutes. In this case, as a surface treatment, the surface treatment was applied to both sides of the first surface F1 and the second surface F2 of the second layer L2. In addition to the above, a test piece was prepared in the same manner as in Example 1.

[0093] In Example 5, the thickness of the second layer L2 was set to 0.70 mm compared to Example 4, and after the wear resistance treatment, a softening treatment was performed as an additional surface treatment using the surface treatment agent B. A test piece was prepared in the same manner as in Example 4 except for the above.

[0094] In the softening treatment, FORDEEP SOF (trade name, silicone softener) of Epson Como Printing Technologies S.rl was used as the surface treatment agent B. The surface treatment agent B was prepared into an aqueous solution with a concentration of 50 g / L. Furthermore, as a surface treatment, the above solution was impregnated into the material sheet W using a padding machine as an impregnation device. Thereafter, it was dried at 160° C. for 3 minutes. In this case, as an additional surface treatment, the above surface treatment was applied to both sides of the first surface F1 and the second surface F2 of the second layer L2.

[0095] In the clothing fabric of the comparative example, the fabric N that becomes the first layer L1 is omitted, and the forming step S5 is not performed. Specifically, in the comparative example 1, the weight of the second layer L2 is set to 100 g / m2 compared to the embodiment 2. 2 The thickness of the second layer L2 was set to 0.28 mm, and the forming step S5 was omitted. A test piece was produced in the same manner as in Example 2 except for the above.

[0096] In Comparative Example 2, the first layer L1 is omitted compared to Example 4, and the weight of the second layer L2 is set to 100 g / m 2 The thickness of the second layer L2 was set to 0.29 mm. A test piece was prepared in the same manner as in Example 4 except for the above.

[0097] In Comparative Example 3, a test piece was prepared in the same manner as in Comparative Example 2, except that the same softening treatment as in Example 5 was performed instead of the wear resistance treatment.

[0098] In Comparative Example 4, a test piece was prepared in the same manner as in Example 5 except that the thickness of the second layer L2 was changed to 0.30 mm compared to Comparative Example 2 and both the wear resistance treatment and the softening treatment were performed.

[0099] In Comparative Example 5, the weight of the second layer L2 was set to 160 g / m 2 A test piece was produced in the same manner except that the thickness of the second layer L2 was set to 0.87 mm.

[0100] In Comparative Example 6, the weight of the second layer L2 was set to 160 g / m 2 A test piece was produced in the same manner except that the thickness of the second layer L2 was set to 0.88 mm.

[0101] In Comparative Example 7, the weight of the second layer L2 was set to 160 g / m 2 A test piece was produced in the same manner except that the thickness of the second layer L2 was set to 0.88 mm.

[0102] In Comparative Example 8, the weight of the second layer L2 was set to 160 g / m 2 A test piece was produced in the same manner except that the thickness of the second layer L2 was set to 0.88 mm.

[0103] 3.2. Evaluation of fabrics for clothing

[0104] The test pieces of the examples and comparative examples were evaluated for strength, color development, fuzzing, and touch. Figure 4 The evaluation results of each level are shown in .

[0105] 3.2.1. Strength evaluation

[0106] The following operation was performed as an evaluation of strength. The two ends of the test piece in the length direction were held by hand, and after overlapping the adjacent parts held by hand, rubbed for 3 minutes. At this time, the surfaces rubbed against each other became the surface of the second layer L2. Thereafter, the presence or absence of damage was confirmed for each test piece, and the evaluation was performed based on the following judgment criteria. In addition, if damage occurred during the rubbing operation, the time of occurrence was recorded, and the subsequent rubbing operation was stopped.

[0107] Evaluation Benchmarks

[0108] A: No breakage occurred even in a 3-minute rubbing operation.

[0109] B: Damage occurred during the rubbing operation of 2 minutes or more and less than 3 minutes.

[0110] C: Damage occurred during the rubbing operation of 1 minute or more and less than 2 minutes.

[0111] D: Breakage occurred during the rubbing operation of less than 1 minute.

[0112] 3.2.2. Evaluation of color rendering

[0113] As an evaluation of color development, a commercially available printing inkjet printer (pigment ink) was used to print on the surface of the second layer L2 of each test piece using black ink, and the printing quality was evaluated visually. Specifically, a Monna Lisa (registered trademark) Evo Tre16 of Seiko Epson was used as a printing inkjet printer, and the entire surface of the second layer L2 of the test piece was printed in black (printing duty: 100%). After the ink dried, the evaluation was performed according to the following judgment criteria.

[0114] A: There is no printing unevenness, and good color development is obtained in the entire area of ​​the printed area.

[0115] B: Although printing unevenness was observed in some places, color development without problems in practical use was obtained.

[0116] C: Uneven printing was observed in various locations, and color development sufficient for practical use was not obtained.

[0117] 3.2.3. Evaluation of fuzzing

[0118] For each test piece, the rubbing operation was implemented in the same manner as the above-mentioned strength evaluation. At this time, the rubbing operation was interrupted every 10 seconds, and the degree of fuzzing on the surface of the test piece after each rubbing was observed. The rubbing evaluation was terminated at the time point when fuzzing occurred, and the cumulative rubbing time at that time point was recorded. In the case where fuzzing did not occur, the rubbing operation was implemented until the cumulative rubbing time reached 2 minutes. The time when fuzzing occurred and the presence or absence of fuzzing were evaluated according to the following judgment criteria.

[0119] A: No fuzzing occurred even in the rubbing for more than 1 minute and less than 2 minutes.

[0120] B: Fluffing occurred during the rubbing for more than 20 seconds and less than 1 minute.

[0121] C: Fluffing occurred during the rubbing time of more than 10 seconds and 20 seconds or less.

[0122] D: Fluffing occurred during rubbing for 10 seconds or less.

[0123] 3.2.4. Evaluation of touch

[0124] As an evaluation of the touch, a sensory evaluation of the touch was performed. Specifically, 50 evaluators were asked to touch each test piece with their hands, and the quality of the touch at that time was totaled. The total results were evaluated according to the following judgment criteria.

[0125] A: 95% or more of all the evaluators evaluated that the touch was good.

[0126] B: Among all the evaluators, 80% or more and less than 95% of the evaluators evaluated that the touch was good.

[0127] C: Among all the evaluators, 40% or more and less than 80% of the evaluators evaluated that the touch was good.

[0128] D: Among all the evaluators, less than 40% of the evaluators evaluated that the touch was good.

[0129] 3.3. Summary of evaluation results

[0130] like Figure 4 As shown, in the evaluation of strength, the embodiment achieved A judgment or B judgment in all levels. On the other hand, the comparative examples achieved C judgment or D judgment in all levels. In detail, the thickness of the second layer L2 of embodiment 1 and comparative examples 1 to 4, and of embodiments 2 to 5 and comparative examples 5 to 8 are relatively close. Even when comparing these relatively close thicknesses, the improvement in strength of the embodiment is more significant than that of the comparative examples. In particular, in embodiment 1, although the second layer L2 is 0.31 mm and relatively thin, it achieved A judgment. In the above manner, it is shown that the test piece of the embodiment is a product with both thinness and strength.

[0131] In the evaluation of color development, the examples were judged A or B in all levels, and the comparative examples were judged C in all levels. In the evaluation of fuzzing, the examples were judged A or B in all levels, and the comparative examples were judged C or D in all levels.

[0132] In the evaluation of touch, the examples were rated A or B in all levels, and the comparative examples were rated C or D in all levels. In particular, in Examples 2 to 5, although the thickness of the second layer L2 was close to that of Comparative Examples 5 to 8, good touch was also achieved.

[0133] As described above, it was shown that the test pieces of the examples were superior to the test pieces of the comparative examples in terms of color development, pilling resistance, and touch.

[0134] Explanation of symbols

[0135] C…cloth; F1…first side; F2…second side; L1…first layer; L1a…adhesive layer; L1b…base material layer; L2…second layer; N…fabric; S…fabric for clothing; S2…fiberizing process; S3…mixing process; S4…stacking process; S5…forming process; W…sheet.

Claims

1. A fabric for clothing, having a multi-layer structure, the multi-layer structure comprising: The first layer is breathable; The second layer is configured such that a treating agent is mixed into the defibrated fibers.

2. The clothing fabric according to claim 1, wherein: The second layer is a non-woven fabric. The second layer has a grammage of 100 g / m 2 Above and 180g / m 2 the following.

3. The clothing fabric according to claim 2, wherein: The second layer is formed in such a manner that a mixture containing the defibrated fibers and the treating agent is deposited on the first layer in the air.

4. The clothing fabric according to claim 1, wherein: The first layer includes a base layer and an adhesive layer interposed between the base layer and the second layer.

5. The clothing fabric according to claim 4, wherein: The substrate layer contains polyester.

6. The clothing fabric according to claim 1, wherein: The first layer is colored.

7. The clothing fabric according to claim 1, wherein: In the second layer, a first surface in contact with the first layer or a second surface opposite to the first surface is subjected to surface treatment.

8. The clothing fabric according to claim 1, wherein: The fibers have a weighted average fiber length of 0.5 mm or more and 2.0 mm or less.

9. A method for manufacturing fabric for clothing, comprising: The fiberizing process involves dry fiberizing the fabric to generate fibers; A mixing step of mixing a treatment agent into the fibers to form a mixture; A stacking step of stacking the mixture in the air on the air-permeable fabric that becomes the first layer to form a sheet that becomes the second layer; The forming process pressurizes and heats the fabric and the material sheet to form them.

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